Usage analysis of radio button control label in html and how to set default selection_html/css_WEB-ITnose

Radio object represents a radio button in an HTML form. Each time appears in an HTML form, a Radio object is created. A radio button represents one of a set of mutually exclusive option buttons. When a button is selected, the previously selected button becomes unselected. When a radio button is selected or unselected, the button fires the onclick event handler. You can access the Radio object by iterating over the form's elements[] array, or by using document.getElementById(). Collected and organized by www.169it.com

1. Radio button control syntax

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Use html input tag, name is customized, type type The form for "radio".

2. Radio radio button code example

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1. HTML code snippet:

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2. Example code snippet 2 (default selected setting example):

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In the two code examples, checked="checked" indicates the default selected item settings.

3. Code example three (js operation radio):

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<script></script>